CN102535676B

CN102535676B - Damping seismic isolation and reduction device for building

Info

Publication number: CN102535676B
Application number: CN2012100951633A
Authority: CN
Inventors: 林佳霓
Original assignee: Individual
Current assignee: YUNNAN BUREAU OF SEISMOLOGY
Priority date: 2012-04-01
Filing date: 2012-04-01
Publication date: 2013-11-27
Anticipated expiration: 2032-04-01
Also published as: CN102535676A

Abstract

The invention discloses a damping seismic isolation and reduction device for building, which is characterized by comprising two seismic isolation units which are vertically overlaid with each other, wherein each isolation unit is combined by an A part and a B part, contact surfaces of the A and the B parts are provided with one or more guide rails and chutes which are relative concavely and convexly, the side surfaces of the chutes vertical to the sliding direction of the guide rails are provided with one or more elongated openings, a metal bar rubber block is inserted in each elongated opening, and the two ends of the metal bar rubber block are provided with steel bars. Acting force of seismic wave horizontal components to the buildings provided with the damping seismic isolation and reduction device can be reduced and isolated under this precondition that the buildings on the upper portions and the foundations can be effectively connected, thereby being capable of more securely achieving no collapsing in large earthquakes and no damage in middle earthquakes. Because the maximum displacement of the damping seismic isolation and reduction device is limited by a steel structure, rubber elastic materials and the like can not be acted by tension and shear, the problem that the buildings and the foundations are cut off caused by rubber fracture does not exist, and the damping seismic isolation and reduction device is safer in itself.

Description

A kind of damping seismic isolation device for building

Technical field

The present invention relates to technical field of buildings, specifically a kind of damping seismic isolation device be arranged on building (below be referred to as building).

Background technology

Earthquake has caused huge disaster to the mankind, it is due to the irresistible earthquake shock of building that the injures and deaths that most earthquakes cause are destroyed, supporting member damages due to rear building collapsing, due to building when being subject to seismic wave and impacting, producing shearing deformation causes the building structure distortion impaired, more chief reason is that the long horizontal vibration of secondary wave causes the level of building on vertical to be waved, the seismic energy that is transmitted to building top does not have local consumption, can only get back near basis, if impact just in time stack with seismic wave next time, for frame structure building, impulse force after stack has surpassed concrete compressive strength, the concrete disintegrating of weak part, broken concrete anti-compression, the rock-steady structure of reinforcing bar tension, unstability, lose rigid support and cause building collapsing, the infrequent phenomenon of collapsing of steel work is that above-mentioned seismic forces constantly acts on its weak part, tension and compression cause the metal fatigue fracture repeatedly, may be also that tension and compression repeatedly cause the metal heating, cause physical behavior to change and make whole building collapsing.Certainly, exist building not according to requirements for fortification against earthquake, in building frame or constructional column, steel tensile strength is not lower than earthquake shock intensity (house owed by a citizen had even has anti-seismic construction) yet, and earthquake resistant structure lost efficacy and causes house to be toppled over.

Summary of the invention

The objective of the invention is to overcome in existing isolation measure commonly used to the long-term pressurized of shock-insulation rubber cushion rubber easily sheared the deficiency of easy fracture under aging and geological process power, a kind of vertical maintenance steel work stable support is provided, on horizontal plane by the seismic isolation device that the damping displacement makes earthquake effectively be alleviated the impact force of top-out that is combined to form of member.

The present invention is directed to the active force of seismic damage building respectively at X, Y, tri-of the Z repercussion that axially comes up, particularly the active force of Y-axis waves by building that Partial Conversion is also arranged is the impact on plane, the seismic wave horizontal component is to cause this principle of principal element of building destruction, allow this seismic isolation device bring into play the steel work load-bearing, the characteristic that pull resistance is good, when keeping the building vertical stability, changing of the relative positions mode by device inner part compressing rubber material, extend the time of geological process power to the superstructure transmission, reducing top-out is subjected to the mode of the acceleration of motion of earthquake shock generation to reduce the impact force of earthquake to the building superstructure, as to building, loaded onto can be movable very stable " pin " again, when obtaining certain horizontal anomalous movement space maintenance certain flexibility, during without external impacts, can keep stable rigid support, under the member some strength guarantees, the space be subjected to displacement while guaranteeing building and basic existing external impacts, in the time of guaranteeing it without External Force Acting again, be a rigidly connected integral body, subtract the elastomeric material that plays a major role every earthquake aspect pressurized not at ordinary times, only when external impacts, just can be subject to almost the pressure without shearing deformation, there do not is the situation of tension, for the high level that will consider wind active force factor, super highrise building can not increase negative worry, member has than longer application life of rubber vibration isolation cushion and more safe and reliable theoretical foundation, and using the rubber parts of easier ageing failure as parts that insert separately, install easily, change, safeguard also convenient.

The technical solution adopted for the present invention to solve the technical problems is: comprise two shock insulation cell formations of vertical stack mutually, each shock insulation unit is constituted by A spare and B spare, A, two of B have one or more concavo-convex relative guide rails on contact surface (cross sectional shape of guide rail and chute is consistent with chute, preferred rectangle), chute is at one or more strip openings of the side opening vertical with the guide rail glide direction, and that in each opening, inserts that both sides are equipped with rod iron adds the metal bar block rubber.Two mutual 90-degree rotations of assembly of elements, the grooved rail of two unit just forms a damping seismic isolation device for building of the present invention (also can form by a plurality of unit accumulative total 90-degree rotation, each rotates 45 degree relatively as three assembly of elements) in " ten " stack that projects on ground.

In the present invention, due to metal in assembly, bear the effect of tension and pressure-bearing, pressure when when elastomeric material was only born the seismic forces horizontal impact, parts carried out damped motion on horizontal direction, there is no tension, shear phenomenon, therefore assembly can not cause building and basis to disconnect because of the rubber fracture, both allowed the upper and lower two ends of assembly that certain horizontal changing of the relative positions is arranged, guarantee again in the not compression vertically upward of this assembly, only there is the controlled stretching (gap of rod iron and opening, during manufacture, preferably will make an integral body with block rubber, keep rod iron that certain thickness rubber is arranged up and down), for the General Purpose Rubber isolation cushion, be considered as the high level of forbidden zone, on the building of Super High and tuyere area, use and can not produce any negative effect, more be conducive to applying of seismic isolation technology.Because seismic wave horizontal impact component destroys, be the main cause that causes building damage, use building of the present invention can obtain good shock insulation, anti seismic efficiency.

The mode that the present invention is based on component combination subtracts every earthquake, in practical application, two of the centres parts of two groups of parts can unite two into one, form three of upper, middle and lower parts, intermediate member with the mutual changing of the relative positions of upper and lower parts, combine respectively just can in 360 degree scopes, subtract, every the impact of seismic wave horizontal component to building.The building that this device is installed can keep under the effective prerequisite be connected in top-out and basis, to the seismic wave horizontal component to the active force of building subtract every, because the horizontal component of seismic wave is to cause the principal element of building destruction, more sure the accomplishing of building " no collapsing with strong earthquake, middle shake not bad " of this device is installed.Because the maximum displacement of this shock insulation member is limited by steel work, rubber elastomeric material (hereinafter to be referred as rubber) can not be subject to the effect of tension, shearing, the problem that does not exist the rubber fracture to cause building and basis to disconnect, and device itself is safer.

The present invention can effectively reduce the risk that seismic isolation device self goes wrong, be conducive to the popularization of seismic isolation technology, reduce high earthquake intensity regional architecture thing collapses when earthquake risk (even can avoid destroyed), the great market space is arranged, to manufacturing enterprise, will produce good economic benefit, after promoting, can alleviate greatly the destruction of violent earthquake to people's lives and properties, also had good social benefit, simultaneously, the elastomeric material used due to member is pressurized when external impacts only, there is no tension, therefore to the quality requirement of elastomeric material, not special height, can after the aging waste tire of automobile fragmentation of sex change, not insert by a certain percentage the virgin rubber regeneration by having, greatly reduce production costs, meet Government Green, the guiding of environmental protection and resource regeneration industry, and, because rubber or other elastic components do not bear the weight of top-out at ordinary times, be conducive to extend its life-span, safeguard simultaneously, change rubber components also very convenient.

The accompanying drawing explanation

Fig. 1 is damping seismic isolation device assembling schematic diagram of the present invention.

Fig. 2 is upper sliding part (A spare) schematic diagram of damping seismic isolation device of the present invention.

Fig. 3 is downslide moving part (B spare) schematic diagram of damping seismic isolation device of the present invention.

Fig. 4 be damping seismic isolation device of the present invention add metal bar block rubber schematic diagram.

Fig. 5 is the roller bearing spare schematic diagram of damping seismic isolation device of the present invention.

Fig. 6 is the shrouding schematic diagram of damping seismic isolation device of the present invention.

In figure, the upper sliding part of A-, B-downslide moving part, K-insert and add metal bar block rubber opening, 1-rubber, 2-rod iron, 3-roller bearing, 4-bearing.

The specific embodiment

As shown in Figure 1, damping seismic isolation device of the present invention comprises two shock insulation cell formations of vertical stack mutually, each shock insulation unit is constituted by A spare and B spare, A, two of B have one or more concavo-convex relative guide rail and chute K on contact surface, chute is at one or more strip openings of the side opening vertical with the guide rail glide direction, that in each opening, inserts that both sides are equipped with rod iron adds the metal bar block rubber, and two mutual 90-degree rotations stacks of assembly of elements just form a damping seismic isolation device for building of the present invention.Measure A, B parts contact surface take to alleviate relative changing of the relative positions resistance, can realize by modes such as dress roller bearing spare, graphite linings or apply greases, reduces as far as possible the frictional force of two concavo-convex contact surfaces.Each adds the sliding lock rod iron two ends on metal bar block rubber both sides and makes than the little yi word pattern of rod iron thickness or cylindrical, with shrouding, that one of two rod iron are fixing again, another is locked with latch, allow the rod iron both can be along chute in shrouding, accompany movement during guide rail movement, in the time of can preventing again that rod iron is subject to powerful active force, crooked the disengaging caused component failure, and the rigid material that adds metal bar block rubber both sides parts that chute is upper and lower are locked, whole member becomes as a whole, being subject to secondary wave impacts, grooved rail produces relative motion, under the ejection of 2 end rod irons, earthquake shock just is delivered to top after the compression of rubber at the component on the grooved rail offset direction, increased the action time of each earthquake period, reduce the impact acceleration of earthquake.Damping seismic isolation device for building of the present invention can add BA, AB by AB and add AB, BA and add the mode that BA, BA add AB and combine.

Damping seismic isolation device of the present invention is used for top-out and the basis of connecting building thing, by the steel member, born at ordinary times the weight of top-out, when earthquake occurs, the member two ends still closely are connected with its connecting portion, component inside forms and swings, in swing process, the elastomeric material pressurized, in the process of recovering, increased on the one hand the action time in same earthquake shock cycle, reduce the impact acceleration of earthquake to upper building, after avoiding the peak value acceleration to impact building foundation, kinetic energy is to the top architecture communication, can't harm and consume a part of earthquake energy simultaneously, guarantee the destruction that top-out is not subjected to the earthquake horizontal wave.

Claims

1. damping seismic isolation device for building, it is characterized in that comprising two shock insulation cell formations of vertical stack mutually, each shock insulation unit is constituted by A spare and B spare, A, B parts are having concavo-convex relative guide rail and chute more than one on contact surface, chute is at above strip opening of the side opening vertical with the guide rail glide direction, and that in each opening, inserts that both sides are equipped with rod iron adds the metal bar block rubber.

2, damping seismic isolation device for building according to claim 1, is characterized in that described damping seismic isolation device for building adds BA, AB by AB and adds AB, BA and add the mode that BA, BA add AB and combine.

3, damping seismic isolation device for building according to claim 1, is characterized in that at A, B parts contact surface dress roller bearing spare, graphite linings or apply grease.

4, damping seismic isolation device for building according to claim 1, is characterized in that the metal bar block rubber that adds of packing in A, B parts lateral opening seals with shrouding.